Bug 1601376 - removed try and mem::uninitialized uses in egl.rs. r=jrmuizel
Bug 1601376 - removed try and mem::uninitialized uses in egl.rs. r=jrmuizel

Differential Revision: https://phabricator.services.mozilla.com/D55863

[wrupdater] From https://hg.mozilla.org/mozilla-central/rev/ec74db078a850e430b6bcff8ee53a97aec2f0b3f

servo/webrender,servo/webrender,servo/webrender,servo/webrender,servo/webrender,servo/webrender